diff options
Diffstat (limited to 'hw/usb/hcd-ohci.c')
| -rw-r--r-- | hw/usb/hcd-ohci.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/hw/usb/hcd-ohci.c b/hw/usb/hcd-ohci.c index 5585fd32cc..9d68036d23 100644 --- a/hw/usb/hcd-ohci.c +++ b/hw/usb/hcd-ohci.c @@ -571,6 +571,11 @@ static int ohci_service_iso_td(OHCIState *ohci, struct ohci_ed *ed) addr = ed->head & OHCI_DPTR_MASK; + if (addr == 0) { + ohci_die(ohci); + return 1; + } + if (ohci_read_iso_td(ohci, addr, &iso_td)) { trace_usb_ohci_iso_td_read_failed(addr); ohci_die(ohci); @@ -859,6 +864,11 @@ static int ohci_service_td(OHCIState *ohci, struct ohci_ed *ed) int completion; addr = ed->head & OHCI_DPTR_MASK; + if (addr == 0) { + ohci_die(ohci); + return 1; + } + /* See if this TD has already been submitted to the device. */ completion = (addr == ohci->async_td); if (completion && !ohci->async_complete) { |